alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed Havoc Demon Domain (ttwweatterarartgea .ga in TLS SNI)"; flow:established,to_server; tls.sni; bsize:21; content:"ttwweatterarartgea.ga"; fast_pattern; reference:url,www.zscaler.com/blogs/security-research/havoc-across-cyberspace; classtype:domain-c2; sid:2056541; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_10_08, deployment Perimeter, malware_family Havoc, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_10_08, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)